Aggregate-associated changes in nutrient properties,microbial community and functions in a greenhouse vegetable field based on an eight-year fertilization experiment of China

查看全文 作　　者：LUAN Hao-[1,2]an;GAO [3]Wei;TANG Ji-[1]wei;LI Ruo-[4]nan;LI Ming-[3]yue;ZHANG Huai-[1]zhi;CHEN Xin-[2]ping;Dainius [5]MASILIUNAS;HUANG Shao-[1]wen

机构地区：[1]Institute of Agricultural Resources and Regional Planning/Key Laboratory of Plant Nutrition and Ferilizer,Ministry of Agriculture and Rural Affairs,Chinese Academy of Agricultural Sciences,Beiing 100081,P.R.China;[2]Center for Resources,Environment and Food Security,China Agricultural University,Bejing 100193,P.R.China;[3]Tianjin Institute of Agricultural Resources and Environment,Tianjin 300192,P.R.China;[4]Institute of Agricultural Resources and Environment,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,P.R.China;[5]Laboratory of Geo-information Science and Remote Sensing,Wageningen University,Wageningen 476700,The Netherlands

出　　处：《Journal of Integrative Agriculture》索引2020年第19卷第10期,共19页

基　　金：Fund for China Agriculture Research 3ystem(CAR3-23-B02);the National Key Research and Development Program of China(2016YFD0201001);the Key Research and Development Program of Shandong Province,China(2017CXGC0206). 摘　　要：Soil aggregation,microbial community,and functions(i.e.,extracellular enzyme activities;EEAs)are critical factors affecting soil C dynamics and nutrient cycling.We assessed soil aggregate distribution,stability,nutrients,and microbial characteristics within>2,0.25-2,0.053-0.25,and<0.053 mm aggregates,based on an eight-year field experiment in a greenhouse vegetable field in China.The field experiment includes four treatments:100%N fertilizer(CF),50%substitution of N frtilizer with manure(M),straw(S),and manure plus straw(MS).The amounts of nutrient(N,P20,and K20)input were equal in each treatment.Results showed higher values of mean weight diameter in organic amended soils(M,MS,and S,2.43-2.97)vs.CF-amended soils(1.99).Relative to CF treatment,organic amendments had positive effects on nutrient(i.e.,available N,P,and soil organic C(SOC))conditions,microbial(e.g,bacterial and fungal)growth,and EEAs in the>0.053 mm aggregates,but not in the<0.053 mm aggregates.The 0.25-0.053 mm aggregates exhibited better nutrient conditions and hydrolytic activity,while the<0.053 mm aggregates had poor nutrient conditions and higher oxidative activity among aggregates,per SOC,available N,available P,and a series of enzyme activities.These results indicated that the 0.25-0.053 mm(<0.053 mm)aggregates provide suitable microhabitats for hydrolytic(oxidative)activity.Interestingly,we found that hydrolytic and oxidative activities were mainly impacted by fertilization(58.5%,P<0.01)and aggregate fractions(50.5%,P<0.01),respectively.The hydrolytic and oxidative activities were significantly(P<0.01)associated with nutrients(SOC and available N)and pH,electrical conductivity,respectively.Furthermore,SOC,available N,and available P closely(P<0.05)afected microbial communities within>0.25,0.25-0.053,and<0.053 mm aggregates,respectively.These findings provide several insights into microbial characteristics within aggregates under dfferent frilization modes in the greenhouse vegetable production system in China. 关键词：ferilization soil aggregate distribution microbial characteristics

相关文献

参考文献（94）
引证文献（12）
耦合文献（390）

参考文献(94)

引证文献(12)

耦合文献(390)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Aggregate-associated changes in nutrient properties,microbial community and functions in a greenhouse vegetable field based on an eight-year fertilization experiment of China

参考文献(94)

引证文献(12)

耦合文献(390)

用户提示